Tell me the answer and how you got it

A; there are 1,000 meters in a kilometer, and if you're trying to find how many meters they walked together, you would add the two. This gives you the result of d=(2 x 1,000) + 1,407

D In my humble theory it's d cause I did the math LOL

This law is sometimes called the grouping property. as you can see, regardless of how the numbers are grouped, the answer is still 13. the associative law of multiplication is similar to the same law for addition. it says that no matter how you group numbers you are multiplying together, you will get the same answer.